java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/programs/20181010-MemSafetyPathprograms/dll_extends_pointer_true-valid-memsafety.i_14.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 11:03:32,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 11:03:32,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 11:03:32,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 11:03:32,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 11:03:32,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 11:03:32,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 11:03:32,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 11:03:32,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 11:03:32,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 11:03:32,929 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 11:03:32,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 11:03:32,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 11:03:32,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 11:03:32,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 11:03:32,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 11:03:32,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 11:03:32,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 11:03:32,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 11:03:32,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 11:03:32,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 11:03:32,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 11:03:32,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 11:03:32,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 11:03:32,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 11:03:32,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 11:03:32,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 11:03:32,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 11:03:32,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 11:03:32,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 11:03:32,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 11:03:32,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 11:03:32,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 11:03:32,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 11:03:32,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 11:03:32,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 11:03:32,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 11:03:32,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 11:03:32,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 11:03:32,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 11:03:32,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 11:03:32,985 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 11:03:32,997 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 11:03:33,000 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 11:03:33,001 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 11:03:33,002 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 11:03:33,003 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/dll_extends_pointer_true-valid-memsafety.i_14.bpl [2019-08-05 11:03:33,003 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/dll_extends_pointer_true-valid-memsafety.i_14.bpl' [2019-08-05 11:03:33,050 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 11:03:33,051 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 11:03:33,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 11:03:33,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 11:03:33,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 11:03:33,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "dll_extends_pointer_true-valid-memsafety.i_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:03:33" (1/1) ... [2019-08-05 11:03:33,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "dll_extends_pointer_true-valid-memsafety.i_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:03:33" (1/1) ... [2019-08-05 11:03:33,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 11:03:33,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 11:03:33,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 11:03:33,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 11:03:33,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "dll_extends_pointer_true-valid-memsafety.i_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:03:33" (1/1) ... [2019-08-05 11:03:33,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "dll_extends_pointer_true-valid-memsafety.i_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:03:33" (1/1) ... [2019-08-05 11:03:33,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "dll_extends_pointer_true-valid-memsafety.i_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:03:33" (1/1) ... [2019-08-05 11:03:33,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "dll_extends_pointer_true-valid-memsafety.i_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:03:33" (1/1) ... [2019-08-05 11:03:33,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "dll_extends_pointer_true-valid-memsafety.i_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:03:33" (1/1) ... [2019-08-05 11:03:33,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "dll_extends_pointer_true-valid-memsafety.i_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:03:33" (1/1) ... [2019-08-05 11:03:33,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "dll_extends_pointer_true-valid-memsafety.i_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:03:33" (1/1) ... [2019-08-05 11:03:33,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 11:03:33,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 11:03:33,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 11:03:33,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 11:03:33,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dll_extends_pointer_true-valid-memsafety.i_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:03:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-08-05 11:03:33,201 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2019-08-05 11:03:33,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-05 11:03:33,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-05 11:03:33,547 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-05 11:03:33,548 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 11:03:33,549 INFO L202 PluginConnector]: Adding new model dll_extends_pointer_true-valid-memsafety.i_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:03:33 BoogieIcfgContainer [2019-08-05 11:03:33,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 11:03:33,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 11:03:33,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 11:03:33,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 11:03:33,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dll_extends_pointer_true-valid-memsafety.i_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:03:33" (1/2) ... [2019-08-05 11:03:33,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61bc188 and model type dll_extends_pointer_true-valid-memsafety.i_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 11:03:33, skipping insertion in model container [2019-08-05 11:03:33,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dll_extends_pointer_true-valid-memsafety.i_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:03:33" (2/2) ... [2019-08-05 11:03:33,557 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_extends_pointer_true-valid-memsafety.i_14.bpl [2019-08-05 11:03:33,571 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 11:03:33,587 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 11:03:33,607 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 11:03:33,633 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 11:03:33,634 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 11:03:33,634 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 11:03:33,634 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 11:03:33,634 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 11:03:33,634 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 11:03:33,634 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 11:03:33,635 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 11:03:33,635 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 11:03:33,649 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2019-08-05 11:03:33,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-08-05 11:03:33,657 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:03:33,658 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-08-05 11:03:33,661 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:03:33,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:03:33,667 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2019-08-05 11:03:33,714 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:03:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:03:33,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2019-08-05 11:03:33,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:03:33,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 11:03:33,856 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:03:33,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 11:03:33,864 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:03:33,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:03:33,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:03:33,889 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2019-08-05 11:03:33,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:03:33,950 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2019-08-05 11:03:33,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:03:33,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-08-05 11:03:33,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:03:33,963 INFO L225 Difference]: With dead ends: 5 [2019-08-05 11:03:33,963 INFO L226 Difference]: Without dead ends: 5 [2019-08-05 11:03:33,965 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:03:33,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-08-05 11:03:33,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-08-05 11:03:33,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-08-05 11:03:34,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-08-05 11:03:34,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2019-08-05 11:03:34,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:03:34,002 INFO L475 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-08-05 11:03:34,002 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:03:34,002 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-08-05 11:03:34,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 11:03:34,003 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:03:34,003 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 11:03:34,003 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:03:34,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:03:34,004 INFO L82 PathProgramCache]: Analyzing trace with hash 930412, now seen corresponding path program 1 times [2019-08-05 11:03:34,005 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:03:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:03:34,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjunts are in the unsatisfiable core [2019-08-05 11:03:34,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:03:34,269 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2019-08-05 11:03:34,270 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 11:03:34,274 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 61 [2019-08-05 11:03:34,275 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 11:03:34,280 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-08-05 11:03:34,467 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2019-08-05 11:03:34,468 INFO L567 ElimStorePlain]: treesize reduction 29, result has 46.3 percent of original size [2019-08-05 11:03:34,472 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-08-05 11:03:34,472 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:25 [2019-08-05 11:03:34,562 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 11:03:34,599 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 14 [2019-08-05 11:03:34,600 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-08-05 11:03:34,664 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-08-05 11:03:34,745 INFO L341 Elim1Store]: treesize reduction 12, result has 45.5 percent of original size [2019-08-05 11:03:34,746 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 31 [2019-08-05 11:03:34,747 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-08-05 11:03:34,788 INFO L567 ElimStorePlain]: treesize reduction 26, result has 29.7 percent of original size [2019-08-05 11:03:34,788 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-08-05 11:03:34,789 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:45, output treesize:11 [2019-08-05 11:03:34,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 11:03:34,802 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 11:03:34,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2019-08-05 11:03:34,804 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 11:03:34,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 11:03:34,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 11:03:34,805 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2019-08-05 11:03:34,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:03:34,931 INFO L93 Difference]: Finished difference Result 4 states and 4 transitions. [2019-08-05 11:03:34,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 11:03:34,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-08-05 11:03:34,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:03:34,932 INFO L225 Difference]: With dead ends: 4 [2019-08-05 11:03:34,933 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 11:03:34,934 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-08-05 11:03:34,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 11:03:34,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 11:03:34,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 11:03:34,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 11:03:34,935 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-08-05 11:03:34,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:03:34,936 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 11:03:34,936 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 11:03:34,936 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 11:03:34,936 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 11:03:34,941 INFO L202 PluginConnector]: Adding new model dll_extends_pointer_true-valid-memsafety.i_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 11:03:34 BoogieIcfgContainer [2019-08-05 11:03:34,941 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 11:03:34,944 INFO L168 Benchmark]: Toolchain (without parser) took 1891.96 ms. Allocated memory was 135.3 MB in the beginning and 168.8 MB in the end (delta: 33.6 MB). Free memory was 111.2 MB in the beginning and 124.2 MB in the end (delta: -13.0 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2019-08-05 11:03:34,945 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 135.3 MB. Free memory was 112.8 MB in the beginning and 112.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-08-05 11:03:34,946 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.19 ms. Allocated memory is still 135.3 MB. Free memory was 111.0 MB in the beginning and 109.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2019-08-05 11:03:34,947 INFO L168 Benchmark]: Boogie Preprocessor took 27.43 ms. Allocated memory is still 135.3 MB. Free memory was 109.3 MB in the beginning and 108.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-08-05 11:03:34,947 INFO L168 Benchmark]: RCFGBuilder took 430.34 ms. Allocated memory is still 135.3 MB. Free memory was 107.8 MB in the beginning and 94.5 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2019-08-05 11:03:34,949 INFO L168 Benchmark]: TraceAbstraction took 1390.98 ms. Allocated memory was 135.3 MB in the beginning and 168.8 MB in the end (delta: 33.6 MB). Free memory was 94.1 MB in the beginning and 124.2 MB in the end (delta: -30.1 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2019-08-05 11:03:34,953 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 135.3 MB. Free memory was 112.8 MB in the beginning and 112.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 38.19 ms. Allocated memory is still 135.3 MB. Free memory was 111.0 MB in the beginning and 109.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.43 ms. Allocated memory is still 135.3 MB. Free memory was 109.3 MB in the beginning and 108.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 430.34 ms. Allocated memory is still 135.3 MB. Free memory was 107.8 MB in the beginning and 94.5 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1390.98 ms. Allocated memory was 135.3 MB in the beginning and 168.8 MB in the end (delta: 33.6 MB). Free memory was 94.1 MB in the beginning and 124.2 MB in the end (delta: -30.1 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 145]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4 SDtfs, 1 SDslu, 1 SDs, 0 SdLazy, 7 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 12 NumberOfNonLiveVariables, 164 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...